Departures is a 2008 Japanese drama film by Yōjirō Takita. It won the Academy Award for Best Foreign Language Film at the 81st Oscars in 2009 and the Japan Academy Prize for Picture of the Year at the 32nd Japan Academy Prize.
I loved the story of the Stone Letter: "Long before writing, you would send someone a stone that suited the way you were feeling. From its weight and touch they'd know how you felt. From a smooth stone they might feel that you were happy; from a rough one, that you were worried about them". So the next time you want to convey message of your feelings to somebody, just send them the appropriate stone.